Filter.



PATENTED JULY 24; 1906.

A. L. JOHNS.

FILTER.

APPLICATION nun AUG.14,1905.

MEL

I'HI uomlls PETERS ca, wAsnmu'roN. n. c. v

:cially to processes UNITED I STATES ALFRED LEON JOHNS, OF COLORADO SPRINGS,

ONE-THIRD TO WILLIAM L. EVERITT, OF

PATENT OFFICE.

COLORADO, ASSIGNOR OF DENVER, COLORADO.

FILTER.

Specification of Letters Patent.

Patented July 24, 1906.

Application filed August 14, 1905. Serial No. 274,058.

To all whom it may concern.-

Be it known that I, ALFRED LEON J OHNS,

a citizen of the United States, and a resident of Colorado Springs, in the county of El Paso and State of Colorado, have invented certain new and useful Improvements in Filters, of which the following is a full, clear, and exact description.

This invention relates to filters and it con- .sists substantially in the details of improve- .ments hereinafter more particularly described, and pointed out in the claims.

The invention has reference more espefilters employed in chlorinating for separating gold chlorid from ores containing the same and one of the principal objects of the invention is to profilter for this purpose of an embodilike ends in view.

A further object is to provide a filter of the character referred to which is simple in construction and comparatively inexpensive to manufacture, besides being thoroughly effectiveand reliable in operation and possessing the capacity for service for a greater length of time than with many filters of this type as ordinarily constructed.

The above and additional objects are at- .tained by means substantially such as are illustrated in the accompanying drawings, in

Figure 1 1 is a broken part -sectional side view of a filter embodying my improvements.

gitudinal sectional view on 'my improvements filter the general shape or configuration of 1 the filter.

Before proceeding with a more detailed description it may be stated that in the form of herein shown I employ a the containing structure of which is that of a barrel or its equivalent of suitable depth or thickness, the said structure thus being capable of being conveniently rolledfor a sufficient length of time to cause the ore therein to become thoroughly mixed, by which to both fa- ,cilitate and expedite gold contained in the ore.

the chlorination of the The filter of my 1 throughout with a lining 6 improvements is of special construction, special means being provided for securing the same in the bottom of the containing structure therefor, other special means being employed between said filter and the lining of said structure to prevent access of sand and the like to a special chamber disposed beneath the filter for receiving from the latter the gold chlorid without admixture therewith of sand and slimes.

To carry out the process of chlorination, a suitable quantity of water is first placedwithin the containing structure for the filter, whereupon the desired quantity of gold-ore, in a very fine condition, is also placed within said structure. Suitable quantities of chlorid of lime and sulfuric acid are then placed within the structure, after which the latter is rolled for a sufiicient length of time, as is well understood in filters of this general type, this action resulting in the acid and lime in the structure being converted into chlorin gas, which dissolves in the water, thus forming a strong chlorin solution, which dissolves the gold in the form of chlorid. As will be understood by those familiar with these 'processes the chlorination of the gold will be rendered more complete by the rolling action imparted to the structure, it bein necessary, however, to separate the gold 0 lorid from the fine sand and mud with which it is admixed. By the use of my improvements this separation is efiected both economically and completely, as will presently be exlained.

In the general reference just above made to the manner in which the chlorination of the gold is effected it should have been mentioned that the interior of the structure,

wherein the ore is contained, is placed under the pressure necessary to efiect the Washing of the chlorid from the ore.

Reference being had tothe drawings by the designating characters thereon, l represents my improved structure in entirety, the outer shell 2 of which isof any suitable dimensions and material, but preferably constructed of steel and provided at the ends thereof with flanges 3 for the attachment thereto of the heads 4 and 5 of the said shell. The latter is circular in cross-section and of any desired interior capacity and is provided of lead or its equivalent, having a suitable depth or thickness and which also may be provided at each of its ends with a flan e 7 to close the joint between the adjacent flange of the shell and the head of the shell cooperating therewith. Mounted in the bottom of the structure is the filter of my improvements, the same being indicated at 8 and formed substantially in the shape of an arch extending from end to end of the structure 1, as indicated in Fig. 1. The said filter is formed of lead, and inasmuch as this material is liable to be attacked or eaten into by the chlorin solution within the structure I preferably construct myimproved filter of a plurality of sections 9, as indicated in Fig. 1, the said sections fitting each other closely from end to end of the said structure 1, so that in the event of any one or more parts only of the filter being attacked by the chlorin solution instead of having to remove the filter in entirety it will be necessary only to remove as many sections thereof as may have been so attacked. This is an advantage in filters of this particular type, and by so constructing the filter the expense attending the chlorinating process is considerably reduced, inasmush as the sections of the filter thus removed may be remolded into shape for use again in substantially the same way.

In order to derive the effective separation of the gold chlorids from the sand and other ma terial with which it is admixed within the structure above the filter, I form the latter (or each of the sections disposed longitudinal slits 10 of suitable dimensi ons, the same being properly sp aced from each other and extending all the way through the body of the filter, (see Figs. 2 and 3,) it being here mentioned that in virtue of the special construction of the filter a chamber '11 is formed beneath the sections thereof, which extends the full length of the interior of the structure. In order that no sand or the like may find its way from the main interior of the shell 2, I provide the lower ends of the sections of the filter with longitudinally extendin grooves 12, in which are placed suitable blocks 13, of rubber or other elastic material, so that when said sections are properly disposed upon the lower portion of the lead lining 6 for the shell 2 and properly secured in rigid position the said blocks will be placed under compression, and thereby serve as a packing for thoroughly closing the joints with which they are associated. Each section 9 of the filter may be of any length desired, and near each end of each section an inner vertical post or upright 14 is provided, in each of which may be embedded a bolt 15, having at the upper end thereof a head 16 and bein screw-threaded a suitable distance from its ower end, as indicated at 17, to receive thereon a nut 18 after the lower end portion of the bolt has been properly in thereof) with numerouslyinstead of troduced throu'gh corresponding openings formed therefor in the said shell 1 and-its 1 lead lining 2. In this way each section of the filter is firmly secured in rigid position within the structure, and it is apparent that when the latter has been stopped from rolling and water-pressure applied to same-an effective separation of the gold chlorid from the sand and other material will take place. It should be mentioned that the said numerously-disposed longitudinal slits 10, extending throughout the entire structure of the filter, perform a special function in the carrying out of the chlorinating process, which is thus explained. When the structure is first put on filter for the purpose of effecting the separation of the gold chlorids from the other materials, the extremely fine sand and slimes lying nearest to the filter will be caused to pass through the slits to a greater or less extent; but in a very short time the coarser sand will pack over these slits, thereby practicallyformingnumerousfiltering-bodiesforthe chlorids and through which the slimes are incapable of passing. In this way the greatest of advantages is derived, in that the filtering process may be carried out in a consider ably shorter space of time than hitherto, with a greater yield of chloridsat less expense.

By means of the special embodiment of filter shown I am enabled to derive greater results from a structure of smaller dimension than hitherto and at considerable reduction in the expense attending the operation of the structure.

By the term put on filter I mean when the barrel has been stopped from rolling and water-pressure is applied at 1901 Fig. 1 and the valve 20 is opened up to allow the"gold chlorid to pass off that has already passed through the filter.

It will'be apparent of course that instead of constructing the filter of a plurality of sec tions I may construct the same of one integral body, and it will also be apparent that the particular means herein employed for tions of the filter in place within the lining of the shell 1 other equivalent means may be employed therefor.

The structure may be providedat any suitable portion of the upper part thereof with a suitable valve-controlled inlet-pipe 19 for the introduction of water or othermaterial within. the interior of the structure, and at the lower part of the latter a suitable distance from either end thereof a valve-controlled outlet-pipe 20 may be also employed for drawin off the contents of the structure whenever desired. The heads 4 and 5 of the structure may be provided with what may be termed journals 21.

To prevent the chlorin solution contained in chamber 11 from attacking the metal of the bolts 15, I provide each of the latter with mounting and securing the seca protective gasket 15, of suitable material, located in the vicinity of the intersection of the lower end of the corresponding post. 14.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A structure of the character specified, comprising a hollow bod capable of being rolled, a lining therefor 0 suitable material, an arched filter seated upon the lining, and having numerous slits therethrough, and packing between the lining and parts of the filter immediately adjacent thereto.

2. A structure of the character specified, comprising a hollow body capable of being rolled, a linin therefor of suitable material, and an arche filter seated upon the lining, having numerous slits therethrough and formed in the parts thereof immediately adjacent to the lining with grooves havingblocks of rubber therein.

3. A structure of the character specified, comprising a hollow body capable of being rolled, a linin therefor of suitable material, and an arched filter of lead seated upon the lining, having numerous slits therethrough, said filter being constructed of a plurality of sections each formed in the parts thereof immediately adjacent to the lining with grooves having packing therein.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALFRED LEON JOHNS.

Witnesses O. W. DOLPH, C. R. HAMMOND. 

